Firstly (or rather, secondly), the bridge has been improved after studying the frigates on Anchor 9 on the Noble Map pack (not the best map pack in the world, by the way).

Secondly (or rather, firstly), the 'wings' have been remade so that they are now much more like the frigate.

Finally, the engines have been much improved. (I hope you're happy, Cody G!)

End notes:
There are other minor alterations to the model, but they aren't too significant on the whole, but the result is much better than the previous model, which seems to have done quite nicely in the popularity category. Anyway, the required pleading for comments and begging for ratings is implied by me just saying what I just said, so I'll leave you to do whatever.